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openmpi/ompi/group/group_init.c
Nathan Hjelm 5b7943db78 ompi/group: do not allocate ompi_proc_t's on group union/difference
This commit modifies the ompi_group_t union/difference code to compare/copy the
raw group values. This will either be a ompi_proc_t or a sentinel value. This
commit also adds helper functions to convert between opal process names and
sentinel values.

Signed-off-by: Nathan Hjelm <hjelmn@me.com>
2015-09-10 08:55:55 -06:00

348 строки
10 KiB
C

/* -*- Mode: C; c-basic-offset:4 ; -*- */
/*
* Copyright (c) 2004-2005 The Trustees of Indiana University and Indiana
* University Research and Technology
* Corporation. All rights reserved.
* Copyright (c) 2004-2007 The University of Tennessee and The University
* of Tennessee Research Foundation. All rights
* reserved.
* Copyright (c) 2004-2005 High Performance Computing Center Stuttgart,
* University of Stuttgart. All rights reserved.
* Copyright (c) 2004-2005 The Regents of the University of California.
* All rights reserved.
* Copyright (c) 2006-2007 University of Houston. All rights reserved.
* Copyright (c) 2007-2012 Cisco Systems, Inc. All rights reserved.
* Copyright (c) 2009 Sun Microsystems, Inc. All rights reserved.
* Copyright (c) 2012 Oak Ridge National Labs. All rights reserved.
* Copyright (c) 2015 Research Organization for Information Science
* and Technology (RIST). All rights reserved.
* $COPYRIGHT$
*
* Additional copyrights may follow
*
* $HEADER$
*/
#include "ompi_config.h"
#include "ompi/group/group.h"
#include "ompi/constants.h"
#include "mpi.h"
/* define class information */
static void ompi_group_construct(ompi_group_t *);
static void ompi_group_destruct(ompi_group_t *);
OBJ_CLASS_INSTANCE(ompi_group_t,
opal_object_t,
ompi_group_construct,
ompi_group_destruct);
/*
* Table for Fortran <-> C group handle conversion
*/
opal_pointer_array_t ompi_group_f_to_c_table = {{0}};
/*
* Predefined group objects
*/
ompi_predefined_group_t ompi_mpi_group_empty = {{{0}}};
ompi_predefined_group_t ompi_mpi_group_null = {{{0}}};
ompi_predefined_group_t *ompi_mpi_group_empty_addr = &ompi_mpi_group_empty;
ompi_predefined_group_t *ompi_mpi_group_null_addr = &ompi_mpi_group_null;
/*
* Allocate a new group structure
*/
ompi_group_t *ompi_group_allocate(int group_size)
{
/* local variables */
ompi_group_t * new_group = NULL;
assert (group_size >= 0);
/* create new group group element */
new_group = OBJ_NEW(ompi_group_t);
if (NULL == new_group) {
goto error_exit;
}
if (0 > new_group->grp_f_to_c_index) {
OBJ_RELEASE (new_group);
new_group = NULL;
goto error_exit;
}
/*
* Allocate array of (ompi_proc_t *)'s, one for each
* process in the group.
*/
new_group->grp_proc_pointers = (struct ompi_proc_t **)
malloc(sizeof(struct ompi_proc_t *) * group_size);
if (NULL == new_group->grp_proc_pointers) {
/* grp_proc_pointers allocation failed */
OBJ_RELEASE (new_group);
new_group = NULL;
goto error_exit;
}
/* set the group size */
new_group->grp_proc_count = group_size;
/* initialize our rank to MPI_UNDEFINED */
new_group->grp_my_rank = MPI_UNDEFINED;
OMPI_GROUP_SET_DENSE(new_group);
error_exit:
/* return */
return new_group;
}
ompi_group_t *ompi_group_allocate_sporadic(int group_size)
{
/* local variables */
ompi_group_t *new_group = NULL;
assert (group_size >= 0);
/* create new group group element */
new_group = OBJ_NEW(ompi_group_t);
if( NULL == new_group) {
goto error_exit;
}
if (0 > new_group->grp_f_to_c_index) {
OBJ_RELEASE(new_group);
new_group = NULL;
goto error_exit;
}
/* allocate array of (grp_sporadic_list )'s */
if (0 < group_size) {
new_group->sparse_data.grp_sporadic.grp_sporadic_list =
(struct ompi_group_sporadic_list_t *)malloc
(sizeof(struct ompi_group_sporadic_list_t ) * group_size);
/* non-empty group */
if ( NULL == new_group->sparse_data.grp_sporadic.grp_sporadic_list) {
/* sporadic list allocation failed */
OBJ_RELEASE (new_group);
new_group = NULL;
goto error_exit;
}
}
/* set the group size */
new_group->grp_proc_count = group_size; /* actually it's the number of
elements in the sporadic list*/
/* initialize our rank to MPI_UNDEFINED */
new_group->grp_my_rank = MPI_UNDEFINED;
new_group->grp_proc_pointers = NULL;
OMPI_GROUP_SET_SPORADIC(new_group);
error_exit:
return new_group;
}
ompi_group_t *ompi_group_allocate_strided(void)
{
ompi_group_t *new_group = NULL;
/* create new group group element */
new_group = OBJ_NEW(ompi_group_t);
if( NULL == new_group ) {
goto error_exit;
}
if (0 > new_group->grp_f_to_c_index) {
OBJ_RELEASE(new_group);
new_group = NULL;
goto error_exit;
}
/* initialize our rank to MPI_UNDEFINED */
new_group->grp_my_rank = MPI_UNDEFINED;
new_group->grp_proc_pointers = NULL;
OMPI_GROUP_SET_STRIDED(new_group);
new_group->sparse_data.grp_strided.grp_strided_stride = -1;
new_group->sparse_data.grp_strided.grp_strided_offset = -1;
new_group->sparse_data.grp_strided.grp_strided_last_element = -1;
error_exit:
/* return */
return new_group;
}
ompi_group_t *ompi_group_allocate_bmap(int orig_group_size , int group_size)
{
ompi_group_t *new_group = NULL;
assert (group_size >= 0);
/* create new group group element */
new_group = OBJ_NEW(ompi_group_t);
if( NULL == new_group) {
goto error_exit;
}
if (0 > new_group->grp_f_to_c_index) {
OBJ_RELEASE(new_group);
new_group = NULL;
goto error_exit;
}
/* allocate the unsigned char list */
new_group->sparse_data.grp_bitmap.grp_bitmap_array = (unsigned char *)malloc
(sizeof(unsigned char) * ompi_group_div_ceil(orig_group_size,BSIZE));
new_group->sparse_data.grp_bitmap.grp_bitmap_array_len =
ompi_group_div_ceil(orig_group_size,BSIZE);
new_group->grp_proc_count = group_size;
/* initialize our rank to MPI_UNDEFINED */
new_group->grp_my_rank = MPI_UNDEFINED;
new_group->grp_proc_pointers = NULL;
OMPI_GROUP_SET_BITMAP(new_group);
error_exit:
/* return */
return new_group;
}
/*
* increment the reference count of the proc structures
*/
void ompi_group_increment_proc_count(ompi_group_t *group)
{
ompi_proc_t * proc_pointer;
for (int proc = 0 ; proc < group->grp_proc_count ; ++proc) {
proc_pointer = ompi_group_peer_lookup_existing (group, proc);
if (proc_pointer) {
OBJ_RETAIN(proc_pointer);
}
}
}
/*
* decrement the reference count of the proc structures
*/
void ompi_group_decrement_proc_count(ompi_group_t *group)
{
ompi_proc_t * proc_pointer;
for (int proc = 0 ; proc < group->grp_proc_count ; ++proc) {
proc_pointer = ompi_group_peer_lookup_existing (group, proc);
if (proc_pointer) {
OBJ_RELEASE(proc_pointer);
}
}
}
/*
* group constructor
*/
static void ompi_group_construct(ompi_group_t *new_group)
{
int ret_val;
/* Note that we do *NOT* increase the refcount on all the included
procs here because that is handled at a different level (e.g.,
the proc counts are not decreased during the desstructor,
either). */
/* assign entry in fortran <-> c translation array */
ret_val = opal_pointer_array_add(&ompi_group_f_to_c_table, new_group);
new_group->grp_f_to_c_index = ret_val;
new_group->grp_flags = 0;
/* default the sparse values for groups */
new_group->grp_parent_group_ptr = NULL;
}
/*
* group destructor
*/
static void ompi_group_destruct(ompi_group_t *group)
{
/* Note that we do *NOT* decrease the refcount on all the included
procs here because that is handled at a different level (e.g.,
the proc counts are not increased during the constructor,
either). */
/* release thegrp_proc_pointers memory */
if (NULL != group->grp_proc_pointers) {
free(group->grp_proc_pointers);
}
if (OMPI_GROUP_IS_SPORADIC(group)) {
if (NULL != group->sparse_data.grp_sporadic.grp_sporadic_list) {
free(group->sparse_data.grp_sporadic.grp_sporadic_list);
}
}
if (OMPI_GROUP_IS_BITMAP(group)) {
if (NULL != group->sparse_data.grp_bitmap.grp_bitmap_array) {
free(group->sparse_data.grp_bitmap.grp_bitmap_array);
}
}
if (NULL != group->grp_parent_group_ptr){
ompi_group_decrement_proc_count(group->grp_parent_group_ptr);
OBJ_RELEASE(group->grp_parent_group_ptr);
}
/* reset the ompi_group_f_to_c_table entry - make sure that the
* entry is in the table */
if (NULL != opal_pointer_array_get_item(&ompi_group_f_to_c_table,
group->grp_f_to_c_index)) {
opal_pointer_array_set_item(&ompi_group_f_to_c_table,
group->grp_f_to_c_index, NULL);
}
}
/*
* Initialize OMPI group infrastructure
*/
int ompi_group_init(void)
{
/* initialize ompi_group_f_to_c_table */
OBJ_CONSTRUCT( &ompi_group_f_to_c_table, opal_pointer_array_t);
if( OPAL_SUCCESS != opal_pointer_array_init(&ompi_group_f_to_c_table, 0,
OMPI_FORTRAN_HANDLE_MAX, 64) ) {
return OMPI_ERROR;
}
/* add MPI_GROUP_NULL to table */
OBJ_CONSTRUCT(&ompi_mpi_group_null, ompi_group_t);
ompi_mpi_group_null.group.grp_proc_count = 0;
ompi_mpi_group_null.group.grp_my_rank = MPI_PROC_NULL;
ompi_mpi_group_null.group.grp_proc_pointers = NULL;
ompi_mpi_group_null.group.grp_flags |= OMPI_GROUP_DENSE;
ompi_mpi_group_null.group.grp_flags |= OMPI_GROUP_INTRINSIC;
/* add MPI_GROUP_EMPTY to table */
OBJ_CONSTRUCT(&ompi_mpi_group_empty, ompi_group_t);
ompi_mpi_group_empty.group.grp_proc_count = 0;
ompi_mpi_group_empty.group.grp_my_rank = MPI_UNDEFINED;
ompi_mpi_group_empty.group.grp_proc_pointers = NULL;
ompi_mpi_group_empty.group.grp_flags |= OMPI_GROUP_DENSE;
ompi_mpi_group_empty.group.grp_flags |= OMPI_GROUP_INTRINSIC;
return OMPI_SUCCESS;
}
/*
* Clean up group infrastructure
*/
int ompi_group_finalize(void)
{
ompi_mpi_group_null.group.grp_flags = 0;
OBJ_DESTRUCT(&ompi_mpi_group_null);
ompi_mpi_group_null.group.grp_flags = 0;
OBJ_DESTRUCT(&ompi_mpi_group_empty);
OBJ_DESTRUCT(&ompi_group_f_to_c_table);
return OMPI_SUCCESS;
}